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Running a Sportster tank. Petcock hits frame. Notch frame? or Relocate Petcock?

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    Running a Sportster tank. Petcock hits frame. Notch frame? or Relocate Petcock?

    Here are some pictures of what I'm running into:









    Only place I can think that would work to relocate the petcock would be where the "X" is. I'm sure thats not the most efficient place to put it. but its all I could come up with.

    Thanks for the help!

    #2
    May be a bit tricky to do, but why not out the side right in line with where it is now? Patch the hole in the bottom and reweld the threads to the side as low as is possible.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

    Comment


      #3
      DOn't know about efficiency but you certainly won't use all the gas in the tank with it in that spot...
      1980 GS1000G - Sold
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      1983 GS750ES Special - Sold
      2009 KLR 650 - Sold - gone to TX!
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        #4
        Originally posted by chuck hahn View Post
        May be a bit tricky to do, but why not out the side right in line with where it is now? Patch the hole in the bottom and reweld the threads to the side as low as is possible.
        I dont understand

        Comment


          #5
          Originally posted by salty_monk View Post
          DOn't know about efficiency but you certainly won't use all the gas in the tank with it in that spot...
          I realize that, only spot I could think of that wouldn't interfer with the frame.

          Comment


            #6
            Get a real gas tank.


            Life is too short to ride an L.

            Comment


              #7
              Originally posted by tkent02 View Post
              Get a real gas tank.
              I researched time and time again for a replacement tank... Either way tooo much money or too beat up. I like the look of the sportster tank, and it only cost my $80. Im trying to stay on budget

              Comment


                #8
                Well...I saw that someone had already done some welding on the bottom.

                So that sparked the idea of cutting thenthreads for the petcock out of the bottom and welding a patch over the hole.

                Now relocate the threads for the petcock to the rear and lowest prtion, but have it stick out the side of the tank. But then I realised that would look kinda wired and be awkward for the legs.

                I am not a big fan of frame cutting, but i suppose that some bracing behind the petcock once positioned could be fabbed in.
                MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                Comment


                  #9
                  Originally posted by chuck hahn View Post
                  Well...I saw that someone had already done some welding on the bottom.

                  So that sparked the idea of cutting thenthreads for the petcock out of the bottom and welding a patch over the hole.

                  Now relocate the threads for the petcock to the rear and lowest prtion, but have it stick out the side of the tank. But then I realised that would look kinda wired and be awkward for the legs.

                  I am not a big fan of frame cutting, but i suppose that some bracing behind the petcock once positioned could be fabbed in.
                  I understand now. Basically patch the existing hole, and have a petcock bung welded to the side of the tank, and run it off that. Would that effect anything with the petcock being mounted vertically rather than horizonally?

                  Comment


                    #10
                    I am pretty much with tkent on this one. You really should have a better tank on there.

                    You already have an "L" model bike, the tank isn't that much different shape than a Sportster. The Sportster tank is designed to sit on a frame with a single backbone and all it has to do is hold a gallon or so of gas. The Suzuki tank has a tunnel that is large enough and shaped properly to sit over all three of the backbone tubes, and hide all the coils and some of the wiring in the process.

                    You say you like the "look" of the tank, how do you feel about seeing all that stuff under it?

                    .
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                    Comment


                      #11
                      As long as its as low as possible and to the rear..which is the lowest part of the tank, then all it needs to do is allow the fuel to drain as low as possible from the tank.

                      But as i rethought, it will be sticking out and might be a problem when sitting on the bike for your legs hitting it.

                      As far as if the petcock is horizontal or verticle...its gonna work regardless. Its just an on /off deal.
                      MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                      1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                      NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                      I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                      Comment


                        #12
                        Originally posted by Steve View Post
                        I am pretty much with tkent on this one. You really should have a better tank on there.

                        You already have an "L" model bike, the tank isn't that much different shape than a Sportster. The Sportster tank is designed to sit on a frame with a single backbone and all it has to do is hold a gallon or so of gas. The Suzuki tank has a tunnel that is large enough and shaped properly to sit over all three of the backbone tubes, and hide all the coils and some of the wiring in the process.

                        You say you like the "look" of the tank, how do you feel about seeing all that stuff under it?

                        .
                        It don't bother me. Its gonna be far from a show bike.

                        I think it looks good:
                        Last edited by Guest; 03-20-2013, 04:54 PM. Reason: spelling error

                        Comment


                          #13
                          good job.

                          Comment


                            #14
                            ...so fill us in on your solution...

                            Comment


                              #15
                              Sportster tank.

                              Personally i can't get behind compromising the frame in order to use a compromising 2.2 Gallon tank. If you have your heart set on the early sporty piece, couldn't you weld a supply pipe in the bottom (at whatever angle you need for clearance) and use an inline on/off valve and filter? I plan on using a cx500 custom tank and the bung is close to a carb, so I'm going to use a 90 to get by it and then do just that. Just have to remember to shut it off.

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